How severe is CVE-2023-5387?

CVE-2023-5387 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2023-5387 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-5387?

CVE-2023-5387 affects Funnelforms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-5387?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-5387 published?

CVE-2023-5387 was published on 2023-11-22 and last updated on 2026-06-17.

CVE-2023-5387

CVE-2023-5387 is a medium-severity vulnerability in Funnelforms with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Funnelforms
Published: 2023-11-22
Last modified: 2026-06-17

Description

The Funnelforms Free plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the fnsf_af2_trigger_dark_mode function in versions up to, and including, 3.4. This makes it possible for authenticated attackers, with subscriber-level permissions and above, to enable or disable the dark mode plugin setting.

Frequently asked questions

What is CVE-2023-5387?: The Funnelforms Free plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the fnsf_af2_trigger_dark_mode function in versions up to, and including, 3.4. This makes it possible for authenticated attackers, with subscriber-level permissions and above, to enable or disable the dark mode plugin setting.
How severe is CVE-2023-5387?: CVE-2023-5387 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2023-5387 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-5387?: CVE-2023-5387 affects Funnelforms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-5387?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-5387 published?: CVE-2023-5387 was published on 2023-11-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:funnelforms:funnelforms:*:*:*:*:free:wordpress:*:*

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